What does "wandering" mean?

Wandering: a. & n. from Wander, v. Wandering albatross (Zoöl.), the great white albatross. See Illust. of Albatross. -- Wandering cell (Physiol.), an animal cell which possesses the power of spontaneous movement, as one of the white corpuscles of the blood. -- Wandering Jew (Bot.), any one of several creeping species of Tradescantia, which have alternate, pointed leaves, and a soft, herbaceous stem which roots freely at the joints. They are commonly cultivated in hanging baskets, window boxes, etc. -- Wandering kidney (Med.), a morbid condition in which one kidney, or, rarely, both kidneys, can be moved in certain directions; -- called also floating kidney, movable kidney. -- Wandering liver (Med.), a morbid condition of the liver, similar to wandering kidney. -- Wandering mouse (Zoöl.), the whitefooted, or deer, mouse. See Illust. of Mouse. -- Wandering spider (Zoöl.), any one of a tribe of spiders that wander about in search of their prey.